"The Truck Side Guard Ordinance is the first of its kind in the country. The ordinance requires vehicles over 10,000 pounds (for tractor-trailers a combined weight over 26,000 pounds) and awarded a contract with the City of Boston to have side guards, convex mirrors, cross-over mirrors, and blind-spot awareness decals. Vehicles associated with an awarded City contract will be inspected for side guards by the Inspectional Services Department and issued a permit, certifying the vehicle for 2-years. For those vehicles not in compliance, businesses will face a fine, escalating from $100 for the first offense, to potential termination of the contract...
"In 2013, the Mayor's Office of New Urban Mechanics and the Public Works Department undertook the largest municipal pilot of truck side guards in the nation. The Truck Side Guard Ordinance is a result of this pilot, which included more than a year of testing three different types of side guards on 16 large vehicles, reviewing data from external studies, and from field observations. In the City of Boston pilot, each vehicle cost about $1,800 to outfit and will last the lifetime of the vehicle."
Source: <a href="http://bit.ly/1qWmAot">http://bit.ly/1qWmAot</a>
from CenterLines, the e-newsletter of the National Center for Bicycling & Walking.